Invention Grant
- Patent Title: Method for manufacturing a semiconductor wafer, and semiconductor device having a low concentration of interstitial oxygen
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Application No.: US14867839Application Date: 2015-09-28
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Publication No.: US09728395B2Publication Date: 2017-08-08
- Inventor: Helmut Oefner , Nico Caspary , Mohammad Momeni , Reinhard Ploss , Francisco Javier Santos Rodriguez , Hans-Joachim Schulze
- Applicant: INFINEON TECHNOLOGIES AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Murphy, Bilak & Homiller, PLLC
- Priority: DE102014114683 20141009
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L21/268 ; H01L21/324 ; H01L29/66 ; H01L21/18 ; H01L21/225 ; H01L21/28 ; H01L21/322

Abstract:
A method for manufacturing a substrate wafer 100 includes providing a device wafer (110) having a first side (111) and a second side (112); subjecting the device wafer (110) to a first high temperature process for reducing the oxygen content of the device wafer (110) at least in a region (112a) at the second side (112); bonding the second side (112) of the device wafer (110) to a first side (121) of a carrier wafer (120) to form a substrate wafer (100); processing the first side (101) of the substrate wafer (100) to reduce the thickness of the device wafer (110); subjecting the substrate wafer (100) to a second high temperature process for reducing the oxygen content at least of the device wafer (110); and at least partially integrating at least one semiconductor component (140) into the device wafer (110) after the second high temperature process.
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